Condensed Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Net sales	$ 434.2	$ 482.8
Cost of sales	281.2	307.9
Gross profit	153.0	174.9
Operating expenses:
Selling, general and administrative expenses	87.1	90.9
Impairment of goodwill and intangible asset	147.5
Research and development expenses	14.8	15.3
Restructuring costs	1.6	2.3
Total operating expenses	251.0	108.5
(Loss)/Income from operations	(98.0)	66.4
Other non-operating income and expense:
Interest expense, net	17.4	19.8
Other non-operating (income)/expense, net	(1.5)	1.1
Total other non-operating (income) expense, net	15.9	20.9
(Loss)/Income before income taxes	(113.9)	45.5
Provision for income taxes	2.7	10.3
Net (loss)/income	$ (116.6)	$ 35.2
Weighted average shares, basic	64.5	64.2
Weighted average shares, diluted	64.5	64.4
Net (loss)/income per share:
Basic	$ (1.81)	$ 0.55
Diluted	(1.81)	0.55
Cash dividend declared per share	$ 0.17	$ 0.17